A feminization of Adam with several sweet nickname options — Addie, Ada, Minnie, or Mina being a few.

Adamina

Aidana

Albertine and Alberta are old-fashioned feminizations ala Geraldine and Roberta. This is the kind of name that sounds very dowdy until a hip celebrity chooses it, at which point we don't know how we missed its coolness all this time.

Albertine

With a meaning like "elf power," Alfreda could find some appeal among fantasy enthusiasts. "Freda" makes for a pleasant nickname.

Alfreda

Alphonsine

Andrette

Antoinella

If you're looking for a girl's name that honors an ancestral Arthur, try Artis.

Arthurette

Putting the emphasis on the "elle" softens a name that seems at once futuristic and medieval.

Axelle

Benedicta

The kind of feminized male name that never caught on. 

Benjamina

Bernharda

Bertina

Bobette

Brette

Bruna

There are several better Cal- names that don't simply echo a male form. 

Calvina

Charla

Damienne

Fashionably Continental and much fresher than Dominique, though it's been used since the Middle Ages. Dominica can be spelled any number of ways, from Dominika to Domenica, but we prefer this version.
 Dominica is also a Caribbean Island, making this a place name as well as a classic girl name.
 Hipper cousin Domino was a Bond Girl, a character played by Keira Knightley, and the name chosen for her daughter by British designer India Hicks. Dominy is an interesting unisex spin.

Dominica

If there's an ancestral Earl you want to honor, consider Early instead. 

Earla

Earlene is even more out of style than Earl. These are among the names that have not been revived ala the Hundred Year Rule.

Earlene

Edmonia

Edwine

There's more than one reason why parents might consider this rising name for a daughter. George Eliot was the pen name of English writer Mary Ann Evans, one of the leading authors of the Victorian era. The possibility of nickname Ellie is another factor. 

Girls have been given all possible spellings, including Eliot, Elliot, and Elliott. Lately Elliotte has emerged as a possible feminine form, used almost exclusively for girls in the US. The -otte ending mimics Charlotte; Eliotte is also occasionally found. 

Eliette is sometimes seen in France.

Elliotte

The female version of Emanuel could become more prominent, though for some it still carries a steamy image dating back to a then sensationally erotic French film. Singer and Shameless star Emmy Rossum's full name is Emmanuelle.

Emmanuelle

Emmette

Enrica

One time joke name, à la Lily Tomlin's bossy telephone operator, Ernestine is ready for a possible reevaluation, like cousins Josephine and Clementine.. 

Ernestine

Eugenie enjoyed a major dusting off when Fergie and Prince Andrew chose it for their daughter, restoring a patina of royal sheen it hadn't had since the time of Napoleon III's glamorous empress--who spent much of her life in England. It was also borne by Princess Victoria Eugenie of Battenberg, a granddaughter of Queen Victoria, after whom Prince Andrew's younger daughter was named.
 Eugenie is the title character of a Balzac novel, Eugenie Grandet and also the full name of Scarlet and Rhett's daughter, nicknamed Bonnie Blue because of the color of her eyes, in Gone With the Wind.
 The elegant Eugenie is pronounced differently in different countries. The princess says YOO-zjen-ee while the French pronunciation is more like oo-ZJAY-nee and the Germans say oy-GAIN-ee-ah.

Eugenie

Eustacia, the ancestor of mid-century fave Stacy, is just the kind of fusty old relic that might be polished up for modern use.  Eustacia Vye is the central character of Thomas Hardy's The Return of the Native. 

Eustacia

The futuristic consonant x sets this apart -- for better and worse -- from all the other Felices, Felicias, and Felicitys. 

Felixa

Frederica is an interesting possibility for the parent unintimidated by its old-fashioned formality, and who can appreciate the
vintage charm and verve lurking inside its stuffiness. 
 The name emerged in eighteenth century Prussia when supporters of King Frederick the Great began to name their daughters in his honor, and is currently reporesented by opera star Frederica von Stade.
 Nicknames include the obvious Freddie, plus Rica and Fritzi.

Frederica

Honoring a male relative. Be bold and go with Glenn. 

Glenna

Gustava

Now that Jacob has been the top boys' name for several years, this may come to the fore, the way Michaela did after Michael's long reign at Number One. For now, it's one of the more unusual <a href="https://nameberry.com/search/girls-names/j">girl names starting with J</a>.

Jacoba

More grown up than Jamie, but never given to more than 13 baby girls in the US per year (and that back in 1968). Modern parents prefer Jamie, Jameson or even James itself, as Blake and Ryan Reynolds chose in 2014.

Jamesina

Joel is one of those <a href="https://nameberry.com/boys-names">boys’ names</a> that's never been super-popular yet has never been UNpopular either -- it's been in the Top 400 in the US since we started keeping statistics in 1880. So it's inevitable that its female form Joelle would gain visibility too, and indeed Joelle was used most widely during Joel's reign in the Top 100, from the late 1960s through the early 1990s. 

Joelle reentered the US Top 1000 in 2016 after a decade long absence. It had been just outside the Top 1000 almost all of those years, so its reentry is no surprise. It's also popular in the Netherlands. Joelle is one of the <a href="https://nameberry.com/search/girls-names/j">girl names starting with J</a> that strikes the balance between familiar and unusual.

Pronunciation is distinctively two syllables, as if it were two names: Jo Elle. Joel, on the other hand, rhymes with bowl and roll.

Joelle

Josepha is less heard in this country than in other parts of the world, seen as a slightly awkward feminization a la Ricarda and Benjamina.  In the U.S., Josephine or Joanna is the more usual feminine form of Joseph, though you might consider Josepha if you want to break rank.

Josepha

This <a href="https://nameberry.com/list/472/scottish-names-for-girls">Scottish name for girls</a> has been sued since the 19th Century as a feminine given name, and has a surprisingly feminine sound for a feminization.

Keitha

Kevina

Unlike Lachlan, this <a href="https://nameberry.com/list/472/scottish-names-for-girls">Scottish name for girls</a> is likely to be mispronounced. Is that...LaChina?

Lachina

Leonarda

A sophisticated <a href="https://nameberry.com/girls-names">girls' name</a> for those attracted to Leona, Leonie and Leonore.

Leopoldine

Lorenza

Lucienne is a soft and ultra-sophisticated French-accented option in the Lucy family, one that could provide a fresh alternative to such fatigued Gallic choices as Danielle and Michelle.
 So if you're looking for a more elegant take on Lucy, this could be it. The original male Lucian is a Latin name while Lucien is the French form and Lucienne is a female spin on that.

Lucienne

This name is the feminization of mythological name Lysander, which is best known to English-speakers as a character in Shakespeare's comedy A Midsummer Night's Dream.

Lysandra

Manuela is one feminine form that's more energetic than the male original, and is worth considering if you're seeking an easily assimilated Spanish name.
 In the 1948 film The Pirate, set in the Caribbean village of Calvados, Judy Garland plays a spirited senorita named Manuela. Manuela Santos is a fictional character in Degrassi: The Next Generation and there is a Manuela in the James Bond film Moonraker.

Manuela

Marca

This pretty, international feminization of Matthew was chosen by Mira Sorvino for her daughter, Mattea Angel. 

As the Spanish Mateo and the Italian Matteo become more popular for baby boys throughout Europe, the English-speaking world, and the Americas, Mattea is sure to get wider recognition. And as Theo and Thea have become fashionable names, Teo and Tea are rising too.

Mattea

If you're looking for an unusual Michaela alternative, try this Spanish route. 

Miguela

Feminine spin on Moses and European river name that's also the name of a wine. 

Moselle

Nathanielle

Nolana

Owena

Pauletta

Philippa is a prime example of a boy's name adapted for girls that was common as crumpets in Cornwall, but rarely heard stateside. That was before the advent of royal sister-in-law Philippa Middleton, who goes by the lively nickname Pippa.
 Philippa has still never appeared in the Top 1000 in the US, quite an accomplishment for a classic name that's been around for centuries. It does, however, rank on England's as well as Nameberry's own internal lists.
 
Pippa doesn't rank in the US either, but is far more popular than Philippa in the rest of the English-speaking world. It ranks in the Top 100 in Ireland, Australia, and New Zealand, and in the Top 200 in England and Scotland.
 
Philippa has been fashionable in England since the fourteenth century when King Edward married Philippa of Hainault. There have been several early Saint Philippas, and it was the name of the wife of Geoffrey Chaucer.
 Novelist Philippa Gregory authored the bestselling historical novel The Other Boelyn Girl.

Philippa

Piera

Quentina

Raphaelle

Ricarda

Romantic name, feminine form of the ancient name Romanus or the modern Roman, that may rise again with the league of Rom-beginning names that also include Romy and Romilly.  Romana's downside: Easy to confuse with the more familiar Ramona.

Romana

Ronalda

Ruperta

Samuelle

Some names rise in tandem in their male and female forms, but Sebastia is very rare while the male Sebastian is quite popular. But it certainly might be an attractive choice.

Sebastia

Simona

Though rarely used now that many parents would rather appropriate men's names than sweeten them with feminine endings, Thomasina does have some vintage appeal. 
 Thomasina Coverly plays a large part in the Tom Stoppard play Arcadia. And Thomasina also has some critter cred--Thomasina Tittlemouse is a Beatirx Potter character, there's a Disney movie called The Three lives of Thomasina, about an enchanted cat, and a Paul Gallico novel titled Thomasina, the Cat Who Thought She was God.
 Another version is Thomasin, newly visible via the 2016 horror movie The Witch and also used for a major character in Thomas Hardy's novel The Return of the Native. Hardy's heroine is commonly called Tamsin, the more popular short form.

Thomasina

Previously Timothy's dusty and outdated sister, now actually feels fresher than its brother name. With Thea names right on trend at the moment, this could be a surprising and even more unusual alternative to Theodora or Dorothea for lovers of vintage names and that stylish Thea sound.

Timothea

Vernona

Vincentine

Vlada

Wilhelmina was long burdened with the Old Dutch cleanser image of thick blond braids and clunky wooden clogs, but that started to be changed somewhat by the dynamic Vanessa Williams character on Ugly Betty, and even further by the choice of Wilhelmina by ace baby namers Natalie and Taylor Hanson. For the less adventurous, Willa is, for now, still a more user-friendly female equivalent of William.
 Wilhelmina was a lot more commonly heard in the U.S. at one time: it was as high as Number 215 in the 1880s, but has been off the list completely since 1955.
 Queen Wilhelmina reigned in the Netherlands for most of the early twentieth century, becoming a heroic figure during the two World Wars. The name got an infusion of glamour via Wilhelmina Cooper, the Dutch-born model who established the top Wilhelmina Model Agency in 1967. Wilhelmina "Willie" Scott was the name of the Kate Capshaw character in Indiana Jones and the Temple of Doom.
 To enliven her image, Wilhelmina has a plethora of nicknames: Mina, Minna, Minnie, Billie, and Willa. Wilma.

Wilhelmina

Will have spicy associations for the older generation via author of the 1972 bestseller, The Happy Hooker.

Xaviera

Zacqueline

Tabitha_Stone's list "Unconventional Feminizations of Male Names" of 75 great name ideas: Adamina - Zacqueline!

Unconventional Feminizations of Male Names

Beyond Josephine and Alexa, these are some feminizations of male names that you might not have heard of.